PedalPCB Decadence Preamp

 PedalPCBs take on the preamp section of Peavey Decade amp.

Schematic is avaiable HERE.

Madbean BirdDog

 An old forgotten madbean project based on the pre amp section of solid state Squier 51 amplifier. I really find these SS amp designs interesting and they usually ditorts in an interesting way. The op amp types aren't specified in the schematic but I bet TL072 will work fine. You can also try op amps with bad specs like LM1458 or LM358, things might sound more fuzzy and dirty with these.

 

 

Danelectro Nichols 1966 Fuzz

 Schematic is avaiable HERE.

Lovepedal Tchula

...and Ian also wanted to contribute with a layout....TCHULA!

Verified and good to go.

T-Rex Mudhouny + Green Ringer

 Jordan sent me a layout and of course it qualifies as an entry on the blog. Still unverfifed, though.

Demedash Effects Incandenza Relay Bypass

 Here is a contribution from Chris Stelloh that seem to be really useful.

Chris says:

This is an updated version of the Demedash Incandenza micro-controller free clickless relay true bypass switch. It takes up a bit more room than a simple 3pdt, but because of the friction-free operation of the SPST button, it will last WAY longer than that same traditional, mechanical 3pdt switch. I realize that most folks will not want to build an extra board where just a footswitch will do... but for those of us that DO, here's my drawing of a super-slick, silent, clickless relay that doesn't require any coding or microcontrollers. There are a few earlier versions of this circuit floating around the web, but this one has a very important update from Steve Demedash himself. The power filtering and 100 ohm resistor between the 555 and the relay is super important. I found that the power spike when engaging the flip flop was enough to mess with other circuitry that was close to the switch. For example: I had a dual circuit build with independent on/off switches and triggering one would sometimes trigger the other one unintentionally.

Anyway - here's a boring utility layout that has ended up being the thing I build the most, since I put these in just about any circuit that will permit it. This layout also allows you to omit the polarity protection diode for the main board and the status LED as well since those are both contained here on this switch daughterboard. The 5v DPDT relays you can use for this are not limited to just these three - however, these three are the smallest and most inexpensive I've found so far. Also - I don't like to use standing axial components or 3-row resistors but in the case of this board, I wanted to keep it as small as possible. Be sure and notice the anode of D3 connected to ground!

 

Catalinbread V8 Fuzz Engine

 Schematic is avaiable HERE.

Vemuram Butter Machine

 Schematic is avaiable HERE.

Ace Tone FM-2 Fuzzmaster V2

 Bernarddur, the schematic and tracing wizard over at FSB got hands on a FM-2 a while ago. It turns out that the circuit went through some revisions during its short lifespan. The Fuzz Adjust (Tone) control had been reowrked and the recovery stage had been altered. Since it is one of my favorite vintage circuits I decided it needed another layout!😏

Schematic is avaiable HERE.

 

Electro Harmonix Big Muff Ram's Head Reissue

 Schematic is avaiable HERE.

Catalinbread Fuzzrite Germanium

 Schematic is avaiable HERE.